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Groups > comp.lang.c > #156992

Re: Programming exercise/challenge

From Ben Bacarisse <ben.usenet@bsb.me.uk>
Newsgroups comp.lang.c
Subject Re: Programming exercise/challenge
Date 2020-12-06 17:51 +0000
Organization A noiseless patient Spider
Message-ID <871rg2rffu.fsf@bsb.me.uk> (permalink)
References <86wnxwkyol.fsf@linuxsc.com>

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Tim Rentsch <tr.17687@z991.linuxsc.com> writes:

> Prompted by some recent discussion regarding 'goto' statements and
> state machines, I would like to propose a programming exercise.
> (It is perhaps a bit too large to be called an exercise, but not so
> difficult that it deserves the label of challenge.  On the other
> hand there are some constraints so maybe challenge is apropos.  In
> any case somewhere in between those two bounds.)
>
> Short problem statement:  a C program to remove comments from C
> source input.

Apologies for non-C code but I could not resist...

In all the goto/no goto discussion it's easy to lose track of the fact
the C does not necessarily have the best primitives for constructing
this sort of program.  I don't mean things like, say, complex regular
expressions, or built-in grammar parsing (al la Perl6).  I mean basic
language constructs.

Here is a solution in Haskell.  It is deliberately not very "Haskelly"
because I want to keep the code really simple for programmers unfamiliar
with the language.

main = do input <- getContents
          putStr (stripComments (logicalLines input))

stripComments []                 = []
stripComments ('/' : '/' : rest) = stripComments (dropWhile (/= '\n') rest)
stripComments ('/' : '*' : rest) = ' ' : stripComments (nestedComment rest)
stripComments (c   :       rest) =  c : if c == '\'' || c == '"'
                                        then skipQuote c rest
                                        else stripComments rest

nestedComment ('*' : '/' : rest) = rest
nestedComment (c   :       rest) = nestedComment rest
nestedComment []                 = error "Unterminated comment"

skipQuote q ('\\' : c : rest) = '\\' : c : skipQuote q rest
skipQuote q (c    :     rest) = c : if c == q
                                    then stripComments rest
                                    else skipQuote q rest
skipQuote q []                =  error "Unterminated literal"

logicalLines ('\\' : '\n' : rest) =     logicalLines rest
logicalLines (c    :        rest) = c : logicalLines rest
logicalLines []                   = []

(Notes: string are lists and : is the list "cons" operation.  [] is the
empty list.  Function application is by juxtaposition: f x and is the
highest priority operator.  Functions are defined by cases that are
written using simple pattern matching.  For example, stripComments [] =
[] means return nothing when passed nothing.)

Obviously for some there will be a high language barrier, but I think
it's worth having a go at following what's happening.

Haskell has two big advantages for this exercise: pattern matched cases
and lazy evaluation.  The case-by-case definition lets you say, very
clearly, how to handle each situation, and the lazy evaluation means you
can chain function calls to make processing pipelines like this:

  putStr (strip (logicalLines input))

This means output the string of characters that result from stripping
comments from the logical lines, but at no time is the whole input in
memory.  Characters are fetched as needed to satisfy each function call.

Originally, I just wrote stripComments, but when I decided to include
logical line processing (C's \<newline> "continuation" mechanism) it was
trivial to put it in.  If I want to do trigraphs, that, too, would be a
simple addition to the pipeline.  (There is even an operator to make
this simpler, but I did not want to add too many peculiar symbols.)

I am now tempted to try to write a C version that preserves as much of
what I see as the clarity and simplicity of this solution.  I am not as
hopeful as I'd like to be about that!

-- 
Ben.

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Thread

Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-05 08:25 -0800
  Re: Programming exercise/challenge Sjouke Burry <burrynulnulfour@ppllaanneett.nnll> - 2020-12-05 17:33 +0100
    Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-06 11:58 -0800
    Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-30 09:40 -0800
      Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-30 18:20 +0000
        Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-31 01:04 -0800
        Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2021-01-02 22:05 +0300
          Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2021-01-02 14:48 -0500
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-02 19:17 -0800
          Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-02 19:04 -0800
      Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-30 21:44 +0000
        Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-31 02:54 +0000
        Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-03 09:49 -0800
          Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2021-01-04 00:15 +0300
            Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-03 21:57 +0000
              Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-03 23:00 +0000
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-04 00:00 +0000
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-04 20:04 -0800
              Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-05 07:15 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-07 22:30 -0800
          Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-04 18:42 +0000
            Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-04 21:23 +0000
              Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-04 23:41 +0000
  Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-05 16:39 +0000
    Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-05 16:58 +0000
      Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-05 17:08 +0000
      Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-05 17:11 +0000
        Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-05 17:24 +0000
          Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-05 17:52 +0000
            Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-05 18:30 +0000
            Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-05 19:56 +0000
              Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-06 14:51 +0000
      Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-05 17:49 +0000
        Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-05 18:34 +0000
      Re: Programming exercise/challenge Bonita Montero <Bonita.Montero@gmail.com> - 2020-12-05 19:40 +0100
        Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-05 18:47 +0000
          Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-05 23:19 +0000
            Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-05 23:56 +0000
            Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-08 02:26 +0000
              Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-08 16:04 +0300
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 23:39 -0800
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-12 23:34 +0300
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-12 19:28 -0800
                Re: Programming exercise/challenge kegs@provalid.com (Kent Dickey) - 2020-12-29 10:34 -0600
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-29 20:05 -0800
    Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-06 06:03 -0800
  Re: Programming exercise/challenge dfs <nospam@dfs.com> - 2020-12-05 13:58 -0500
    Re: Programming exercise/challenge Jorgen Grahn <grahn+nntp@snipabacken.se> - 2020-12-05 21:37 +0000
      Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-06 06:13 -0800
        Re: Programming exercise/challenge jacobnavia <jacob@jacob.remcomp.fr> - 2020-12-06 18:00 +0100
          Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-06 12:31 -0800
    Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-06 06:26 -0800
  Re: Programming exercise/challenge jacobnavia <jacob@jacob.remcomp.fr> - 2020-12-05 23:32 +0100
    Re: Programming exercise/challenge jacobnavia <jacob@jacob.remcomp.fr> - 2020-12-06 17:18 +0100
      Re: Programming exercise/challenge jacobnavia <jacob@jacob.remcomp.fr> - 2020-12-06 17:51 +0100
      Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-06 22:27 +0000
        Re: Programming exercise/challenge jacobnavia <jacob@jacob.remcomp.fr> - 2020-12-07 09:37 +0100
          Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-07 07:36 -0500
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 22:49 -0800
  Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-06 17:51 +0000
    Re: Programming exercise/challenge dfs <nospam@dfs.com> - 2020-12-06 13:03 -0500
      Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-06 23:53 +0000
    Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-06 19:53 +0000
      Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-06 23:38 +0000
        Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-07 00:17 +0000
          Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-07 02:09 +0000
    Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-07 01:03 -0800
      Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-07 12:05 +0000
        Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-07 12:25 +0000
          Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-07 13:33 +0000
            Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-07 14:18 +0000
              Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-07 14:31 +0000
                Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-07 12:58 -0500
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 23:03 -0800
              Re: Programming exercise/challenge Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-07 07:12 -0800
              Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-07 21:55 +0000
              Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 22:59 -0800
          Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 22:55 -0800
            Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-09 07:45 -0500
              Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-24 11:26 -0800
                Re: Programming exercise/challenge Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-12-24 12:24 -0800
                Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-24 17:19 -0500
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-27 05:16 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-27 04:17 -0800
                Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-27 08:27 -0500
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-29 19:18 -0800
        Re: Programming exercise/challenge Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-07 05:15 -0800
          Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-07 13:42 +0000
        Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 22:53 -0800
        Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-10 01:49 -0800
          Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-10 22:35 +0000
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-10 21:17 -0800
              Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-12 21:44 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-12 19:46 -0800
                Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-13 12:21 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-24 11:35 -0800
                Re: Programming exercise/challenge Rosario19 <Ros@invalid.invalid> - 2020-12-31 00:46 +0100
                Re: Programming exercise/challenge Rosario19 <Ros@invalid.invalid> - 2020-12-31 00:52 +0100
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-31 00:34 -0800
                Re: Programming exercise/challenge Rosario19 <Ros@invalid.invalid> - 2021-01-01 08:23 +0100
                Re: Programming exercise/challenge Rosario19 <Ros@invalid.invalid> - 2021-01-01 10:09 +0100
                Re: Programming exercise/challenge Rosario19 <Ros@invalid.invalid> - 2021-01-01 11:38 +0100
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-01 08:24 -0800
      Re: Programming exercise/challenge "james...@alumni.caltech.edu" <jameskuyper@alumni.caltech.edu> - 2020-12-07 07:03 -0800
        Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-08 02:16 +0300
          Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-09 02:39 +0300
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 23:18 -0800
          Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 23:17 -0800
  Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-08 00:27 +0300
    Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 23:20 -0800
  Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-07 13:44 -0800
    Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-07 14:01 -0800
    Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-07 22:16 +0000
      Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-07 15:10 -0800
        Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-08 01:07 +0000
      Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-08 00:34 +0000
    Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-08 18:17 -0800
      Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-09 00:56 -0800
        Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-09 02:30 -0800
          Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-09 15:14 -0800
            Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-09 15:44 -0800
            Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-12 23:56 +0300
              Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-12 13:29 -0800
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-13 00:46 +0300
                Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-12 13:59 -0800
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-13 14:17 +0300
                Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-13 12:58 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-13 20:57 -0800
                Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-14 20:44 -0800
                Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-23 11:15 -0800
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-23 23:45 +0300
                Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-23 21:36 -0800
                Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-24 09:11 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-24 15:30 -0800
                Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-24 23:18 -0800
                Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-24 23:56 -0800
                Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2020-12-28 12:01 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-29 19:31 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-24 14:47 -0800
  Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-08 01:59 +0300
    Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 23:26 -0800
  Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-07 19:02 -0500
    Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-08 01:15 +0000
      Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-07 20:38 -0500
        Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-08 02:19 +0000
    Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-08 11:44 +0000
      Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-08 07:32 -0500
        Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-08 14:40 +0000
          Re: Programming exercise/challenge "james...@alumni.caltech.edu" <jameskuyper@alumni.caltech.edu> - 2020-12-08 06:52 -0800
            Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-08 17:31 +0000
              Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-08 20:16 +0000
                Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-08 20:48 +0000
                Re: Programming exercise/challenge Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-08 15:34 -0800
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-09 02:54 +0300
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-09 12:33 +0300
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-09 12:43 +0300
                Re: Programming exercise/challenge Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-09 01:52 -0800
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-13 00:28 +0300
                Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-12 21:40 +0000
                Re: Programming exercise/challenge Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-12 13:48 -0800
                Re: Programming exercise/challenge Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-09 01:46 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 23:29 -0800
          Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-08 10:45 -0500
          Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-08 17:16 +0000
      Re: Programming exercise/challenge "james...@alumni.caltech.edu" <jameskuyper@alumni.caltech.edu> - 2020-12-08 06:39 -0800
  Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-07 17:48 -0800
    Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-07 21:03 -0500
      Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-09 03:02 -0800
        Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-09 08:02 -0500
          Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-09 16:49 +0000
            Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-09 13:33 -0500
              Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-09 19:57 +0000
              Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-10 01:45 +0000
                Re: Programming exercise/challenge Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2020-12-10 02:15 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-24 11:24 -0800
                Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-09 21:57 -0500
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-10 03:32 +0000
                Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-10 08:19 -0500
          Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-24 11:04 -0800
            Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-24 19:34 +0000
    Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-08 02:22 +0000
      Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-09 03:04 -0800
        Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-09 11:59 +0000
          Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-09 08:11 -0500
          Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-10 00:02 -0800
            Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-10 15:12 +0000
              Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-10 10:36 -0800
                Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-10 22:11 +0000
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-10 23:34 +0000
                Re: Programming exercise/challenge "james...@alumni.caltech.edu" <jameskuyper@alumni.caltech.edu> - 2020-12-10 20:11 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-10 21:06 -0800
    Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-09 03:03 +0300
      Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-08 21:21 -0500
        Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-09 12:50 +0300
          Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2020-12-09 08:16 -0500
      Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-08 23:32 -0800
      Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-09 12:21 +0000
        Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-02 19:15 +0000
          Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-07 01:54 -0800
            Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-22 22:36 +0000
              Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-22 23:07 +0000
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-22 20:27 -0800
                Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-23 13:05 +0000
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-23 07:45 -0800
                Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-23 16:49 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-23 11:22 -0800
                Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-23 16:53 +0000
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-23 09:55 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-23 21:35 -0800
                Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-24 18:17 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-27 07:57 -0800
              Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-23 11:28 -0800
  Re: Programming exercise/challenge "jfbod...@gmail.com" <jfbode1029@gmail.com> - 2020-12-08 11:30 -0800
    Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-08 20:31 +0000
      Re: Programming exercise/challenge jacobnavia <jacob@jacob.remcomp.fr> - 2020-12-08 22:17 +0100
    Re: Programming exercise/challenge jacobnavia <jacob@jacob.remcomp.fr> - 2020-12-08 22:15 +0100
      Re: Programming exercise/challenge "jfbod...@gmail.com" <jfbode1029@gmail.com> - 2020-12-08 13:28 -0800
        Re: Programming exercise/challenge "jfbod...@gmail.com" <jfbode1029@gmail.com> - 2020-12-09 12:05 -0800
          Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-13 00:04 +0300
      Re: Programming exercise/challenge Lew Pitcher <lew.pitcher@digitalfreehold.ca> - 2020-12-08 21:38 +0000
    Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-09 03:25 -0800
  Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-09 01:00 +0000
    Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-09 03:09 +0000
      Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-13 00:35 +0300
        Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-12 22:57 +0000
          Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-12 23:43 +0000
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-12 19:47 -0800
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-12 23:27 -0800
              Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2020-12-13 14:44 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-24 11:47 -0800
  Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-09 03:36 -0800
    Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-09 14:51 +0300
      Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-09 11:35 -0800
        Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-10 02:33 +0300
          Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-10 00:05 -0800
            Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-10 14:59 +0300
              Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-10 20:32 -0800
          Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-12 23:45 +0300
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-12 19:24 -0800
        Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-13 00:17 +0300
          Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-12 19:23 -0800
    Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2020-12-09 19:31 +0000
    Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-09 12:01 -0800
      Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-09 12:25 -0800
  Re: Programming exercise/challenge kegs@provalid.com (Kent Dickey) - 2020-12-23 01:00 -0600
    Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-24 14:34 -0800
      Re: Programming exercise/challenge kegs@provalid.com (Kent Dickey) - 2020-12-26 23:03 -0600
        Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-27 06:29 -0800
          Re: Programming exercise/challenge kegs@provalid.com (Kent Dickey) - 2020-12-28 11:52 -0600
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-29 00:38 -0800
        Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-28 15:29 +0300
          Re: Programming exercise/challenge kegs@provalid.com (Kent Dickey) - 2020-12-28 17:12 -0600
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-28 23:54 -0800
        Re: Programming exercise/challenge kegs@provalid.com (Kent Dickey) - 2020-12-29 10:26 -0600
          Re: Programming exercise/challenge kegs@provalid.com (Kent Dickey) - 2020-12-29 10:37 -0600
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-29 19:59 -0800
  Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2020-12-30 09:17 -0800
    Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2020-12-31 16:54 +0300
      Re: Programming exercise/challenge kegs@provalid.com (Kent Dickey) - 2020-12-31 09:16 -0600
        Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2020-12-31 15:56 +0000
          Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-07 02:41 -0800
        Re: Programming exercise/challenge Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2020-12-31 13:01 -0800
        Re: Programming exercise/challenge Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2020-12-31 14:15 -0800
        Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-01 08:03 -0800
      Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-01 07:42 -0800
        Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2021-01-02 21:59 +0300
          Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2021-01-02 14:52 -0500
            Re: Programming exercise/challenge Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2021-01-02 12:30 -0800
            Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-02 18:17 -0500
              Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2021-01-02 19:22 -0500
              Re: Programming exercise/challenge Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-01-02 17:48 -0800
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-02 22:35 -0500
          Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-02 18:02 -0800
            Re: Programming exercise/challenge Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-01-03 00:42 -0800
              Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-04 20:12 -0800
  Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-04 07:04 -0800
    Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-04 20:22 -0800
      Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-05 04:24 -0800
        Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-05 06:22 -0800
          Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-05 08:55 -0800
            Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2021-01-05 20:22 +0300
              Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2021-01-05 20:27 +0300
              Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-05 14:20 -0800
            Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-05 17:23 +0000
              Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-05 10:18 -0800
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-05 18:57 +0000
              Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-05 12:58 -0800
                Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2021-01-05 17:31 -0500
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-05 17:50 -0500
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-05 19:33 -0800
                Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2021-01-05 23:02 -0500
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-05 21:00 -0800
                Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2021-01-06 07:42 -0500
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-06 08:55 -0800
                Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2021-01-06 13:29 -0500
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-06 14:09 -0800
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-06 22:11 -0500
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-07 03:10 -0800
                Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2021-01-07 06:40 -0500
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-09 06:27 -0800
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-10 04:32 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-11 06:58 -0800
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-11 14:40 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-15 09:46 -0800
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-17 04:13 -0800
                Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-17 14:18 +0000
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-17 18:02 +0000
                Re: Programming exercise/challenge Richard Damon <Richard@Damon-Family.org> - 2021-01-17 15:12 -0500
                Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-17 21:39 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-20 10:57 -0800
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-21 11:37 -0800
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-22 00:30 -0500
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-22 09:09 -0800
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-22 13:47 -0500
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-22 19:00 +0000
                Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-22 19:42 +0000
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-22 21:16 +0000
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-22 16:41 -0500
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-23 17:46 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-23 09:51 -0800
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-23 18:38 +0000
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-23 04:52 -0800
                Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-01-23 15:45 +0000
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-23 09:04 -0800
                Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-01-23 23:10 +0000
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-23 15:39 -0800
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-23 15:59 +0000
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-25 11:40 -0500
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-23 09:47 -0800
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-23 18:32 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-23 17:26 -0800
                Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-24 01:55 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-27 08:40 -0800
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-23 20:51 -0800
                Re: Programming exercise/challenge Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-01-24 02:28 -0800
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-24 03:49 -0800
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2021-01-24 15:38 +0300
                Re: Programming exercise/challenge Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-01-24 14:04 -0800
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-25 07:26 -0800
                Re: Programming exercise/challenge David Brown <david.brown@hesbynett.no> - 2021-01-25 16:58 +0100
                Re: Programming exercise/challenge luser droog <luser.droog@gmail.com> - 2021-01-25 09:14 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-27 07:32 -0800
                Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-01-27 16:24 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-28 00:11 -0800
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@g{oogle}mail.com> - 2021-01-28 12:25 +0300
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-28 06:18 -0500
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@g{oogle}mail.com> - 2021-01-28 16:54 +0300
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-28 09:15 -0500
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@g{oogle}mail.com> - 2021-01-28 20:07 +0300
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-28 15:58 -0500
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2021-01-29 00:07 +0300
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-28 16:17 -0500
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2021-01-29 00:03 +0300
                Re: Programming exercise/challenge Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2021-01-28 03:37 -0800
                Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-01-28 22:50 +0000
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@gmail.com> - 2021-01-30 23:14 +0300
                Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-01-30 20:49 +0000
                Re: Programming exercise/challenge M Joshua Ryan <luser.droog@gmail.com> - 2021-01-28 00:05 -0600
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-27 11:51 -0800
                Re: Programming exercise/challenge Bart <bc@freeuk.com> - 2021-01-25 17:22 +0000
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-25 12:21 -0800
                Re: Programming exercise/challenge Keith Thompson <Keith.S.Thompson+u@gmail.com> - 2021-01-25 14:27 -0800
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-25 19:41 -0800
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-26 04:46 +0000
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-26 06:30 -0800
                Re: Programming exercise/challenge David Brown <david.brown@hesbynett.no> - 2021-01-26 15:46 +0100
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-27 03:43 -0800
                Re: Programming exercise/challenge David Brown <david.brown@hesbynett.no> - 2021-01-27 13:43 +0100
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@g{oogle}mail.com> - 2021-01-27 17:51 +0300
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-27 11:02 -0500
                Re: Programming exercise/challenge David Brown <david.brown@hesbynett.no> - 2021-01-27 17:03 +0100
                Re: Programming exercise/challenge Malcolm McLean <malcolm.arthur.mclean@gmail.com> - 2021-01-27 07:21 -0800
                Re: Programming exercise/challenge David Brown <david.brown@hesbynett.no> - 2021-01-27 17:09 +0100
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-27 17:04 +0000
                Re: Programming exercise/challenge David Brown <david.brown@hesbynett.no> - 2021-01-28 10:41 +0100
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-28 18:25 +0000
                Re: Programming exercise/challenge David Brown <david.brown@hesbynett.no> - 2021-01-28 10:44 +0100
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-28 21:33 +0000
                Re: Programming exercise/challenge David Brown <david.brown@hesbynett.no> - 2021-01-29 10:39 +0100
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-25 23:52 -0500
                Re: Programming exercise/challenge Ben Bacarisse <ben.usenet@bsb.me.uk> - 2021-01-26 11:37 +0000
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-27 08:04 -0800
                Re: Programming exercise/challenge Anton Shepelev <anton.txt@g{oogle}mail.com> - 2021-01-27 19:16 +0300
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-27 23:38 -0800
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-27 13:43 -0800
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-28 03:16 -0800
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-28 06:42 -0500
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-28 13:01 -0800
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-06 13:35 -0500
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-06 19:27 +0000
                Re: Programming exercise/challenge Kaz Kylheku <563-365-8930@kylheku.com> - 2021-01-06 21:25 +0000
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-06 00:37 -0500
                Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-06 04:34 -0800
                Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-06 11:54 -0500
                Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-05 15:28 -0800
            Re: Programming exercise/challenge James Kuyper <jameskuyper@alumni.caltech.edu> - 2021-01-05 13:27 -0500
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-05 15:43 -0800
          Re: Programming exercise/challenge Dave Dunfield <dave.dunfield@gmail.com> - 2021-01-05 20:10 -0800
            Re: Programming exercise/challenge Tim Rentsch <tr.17687@z991.linuxsc.com> - 2021-01-06 23:07 -0800

csiph-web